From: GOTO Kentaro <gotoken@...>
Date: 2001-11-26T00:28:06+09:00
Subject: [ruby-talk:26452] Re: ++operator and sorted hashes

In message "[ruby-talk:26450] Re: ++operator and sorted hashes"
    on Sun, 25 Nov 2001 23:44:30 +0900,
    Jakub Travnik <j.travnik@sh.cvut.cz> writes:

> > Is there a certain reason why the ++operator is not implemented ?
> > In c/c++: a=5; a++;
> > In ruby: a=5; a+=1

> In Ruby everthing is object,
> a++ means add one in C.
> What this should mean for String? for Regexp? for Your own class?
> It does not have usefull object semantic.

I'd like to add another explanation. 

In Ruby, all operators are bound to method, which is operations to an
object.  So, if ++ is introduced, (a = 5; a++) means (5++).  

On the other hand, C's ++ is operation to an variable but not to data
essentially.  This is not suitable for a numerical object. 

-- Gotoken